| 摘要 |
<p>PURPOSE:To improve operating efficiency by a method wherein the amount of circulating water is controlled in accordance with the remaining amount of hot- water in a hot-water reserving tank. CONSTITUTION:The hot-water reserving tank 1 and a heating heat exchanger 4 are connected by each water circulating pipelines 10, 12 and a circulating pump 9' is provided in the water circulating pipelines to make a forced circulating circuit. The outflow port 11 of water from the tank 1 to the heat exchanger 4 and the inflow port 13' of the water from the heat exchanger 4 to the tank 1 are provided at the side surface of the tank 1. Detecting elements 20a-20c, detecting the remaining amount of hot- water in the tank 1, are provided and the capacity of the pump 9 is enabled to be controlled thereby enabling the amount of the circulating water to be varied in accordance with the amount of remaining hot-water in the tank 1. In case the amount of the remaining hot-water is much and a boundary layer 19a is near the inflow port 13', for example, operation control is effected so as to decrease the amount of circulating water, while in case the boundary layer 9c is apart from the inflow port 13', the operation control is effected so as to increase the amount of circulating water. According to this method, the boundary layer of the hot-water and the water may be maintained lower than a given level in spite of the amount of remaining water and the operating efficiency may be improved.</p> |
